/*
 * Copyright 2017 Huawei Technologies Co., Ltd.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.openo.sdnhub.overlayvpndriver.common.util;

/**
 * <br/>
 * <p>
 * </p>
 *
 * @author
 * @version SDNHUB 0.5 02-Feb-2017
 */
public class RequestHeaderUtil {

    private static final String EMPTY_STR = "";

    private static final String EQUAL = "=";

    private RequestHeaderUtil() {
    }

    /**
     * <br/>
     *
     * @param ctrlUuidParam
     * @return
     * @since SDNHUB 0.5
     */
    public static String readControllerUUID(String ctrlUuidParam) {

        return (ctrlUuidParam == null) ? EMPTY_STR : ctrlUuidParam.substring(ctrlUuidParam.indexOf(EQUAL) + 1);
    }
}
